/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");

/**** 
* Classes
****/ 
// Drum class
var Drum = Container.expand(function () {
	var self = Container.call(this);
	self.drumType = 'none'; // 'large', 'left', 'right', 'sit', 'stand'
	self.action = null; // function to call on tap
	// Set up drum asset
	self.setDrum = function (type) {
		self.drumType = type;
		var assetId = type === 'large' ? 'drum_large' : 'drum_medium';
		var drum = self.attachAsset(assetId, {
			anchorX: 0.5,
			anchorY: 0.5
		});
		// (Drum label removed)
	};
	// Drum tap effect
	self.flash = function () {
		tween(self, {
			scaleX: 1.18,
			scaleY: 0.92
		}, {
			duration: 80,
			onFinish: function onFinish() {
				tween(self, {
					scaleX: 1,
					scaleY: 1
				}, {
					duration: 120
				});
			}
		});
	};
	// Touch event
	self.down = function (x, y, obj) {
		self.flash();
		// Play unique sound for each drum type
		if (self.drumType === 'large') {
			LK.getSound('drum_tap_center').play();
		} else if (self.drumType === 'left') {
			// Play with very long reverb effect
			if (typeof reverb !== "undefined" && reverb.add) {
				var leftSound = LK.getSound('drum_tap_left');
				reverb.add(leftSound, {
					reverbTime: 3.5
				}); // simulate very long reverb (if plugin supports param)
				leftSound.play();
			} else {
				LK.getSound('drum_tap_left').play();
			}
		} else if (self.drumType === 'right') {
			// Play with very long reverb effect
			if (typeof reverb !== "undefined" && reverb.add) {
				var rightSound = LK.getSound('drum_tap_right');
				reverb.add(rightSound, {
					reverbTime: 3.5
				}); // simulate very long reverb (if plugin supports param)
				rightSound.play();
			} else {
				LK.getSound('drum_tap_right').play();
			}
		} else if (self.drumType === 'sit') {
			var sitSound = LK.getSound('drum_tap_sit');
			sitSound.play();
			LK.setTimeout(function () {
				sitSound.play();
			}, 120);
		} else if (self.drumType === 'stand') {
			// Play the sound with 3 fast delay effects (echoes)
			var base = LK.getSound('drum_tap_stand');
			base.play();
			LK.setTimeout(function () {
				base.play();
			}, 45);
			LK.setTimeout(function () {
				base.play();
			}, 90);
		} else {
			// No fallback sound
		}
		if (self.action) self.action();
	};
	return self;
});
// Puppet class: articulated body with simple kinematics
var Puppet = Container.expand(function () {
	var self = Container.call(this);
	// --- Body part sizes (for positioning) ---
	var headH = 120 * 1.5,
		headW = 120 * 1.5;
	var bodyH = 200 * 1.5,
		bodyW = 80 * 1.5;
	var upperArmH = 100 * 1.5,
		upperArmW = 40 * 1.5;
	var lowerArmH = 90 * 1.5,
		lowerArmW = 32 * 1.5;
	var upperLegH = 120 * 1.5,
		upperLegW = 48 * 1.5;
	var lowerLegH = 110 * 1.5,
		lowerLegW = 40 * 1.5;
	// --- Create body parts ---
	// Head
	var head = self.attachAsset('puppet_head', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1.5,
		scaleY: 1.5
	});
	// Body
	var body = self.attachAsset('puppet_body', {
		anchorX: 0.5,
		anchorY: 0,
		scaleX: 1.5,
		scaleY: 1.5
	});
	// Left upper arm
	var lUpperArm = self.attachAsset('puppet_upperarm', {
		anchorX: 0.5,
		anchorY: 0,
		scaleX: 1.5,
		scaleY: 1.5
	});
	// Left lower arm
	var lLowerArm = self.attachAsset('puppet_lowerarm', {
		anchorX: 0.5,
		anchorY: 0,
		scaleX: 1.5,
		scaleY: 1.5
	});
	// Right upper arm
	var rUpperArm = self.attachAsset('puppet_upperarm', {
		anchorX: 0.5,
		anchorY: 0,
		scaleX: 1.5,
		scaleY: 1.5
	});
	// Right lower arm
	var rLowerArm = self.attachAsset('puppet_lowerarm', {
		anchorX: 0.5,
		anchorY: 0,
		scaleX: 1.5,
		scaleY: 1.5
	});
	// Left upper leg
	var lUpperLeg = self.attachAsset('puppet_upperleg', {
		anchorX: 0.5,
		anchorY: 0,
		scaleX: 1.5,
		scaleY: 1.5
	});
	// Left lower leg
	var lLowerLeg = self.attachAsset('puppet_lowerleg', {
		anchorX: 0.5,
		anchorY: 0,
		scaleX: 1.5,
		scaleY: 1.5
	});
	// Right upper leg
	var rUpperLeg = self.attachAsset('puppet_upperleg', {
		anchorX: 0.5,
		anchorY: 0,
		scaleX: 1.5,
		scaleY: 1.5
	});
	// Right lower leg
	var rLowerLeg = self.attachAsset('puppet_lowerleg', {
		anchorX: 0.5,
		anchorY: 0,
		scaleX: 1.5,
		scaleY: 1.5
	});
	// --- Initial pose state ---
	self.state = {
		vx: 0,
		// horizontal velocity
		vy: 0,
		// vertical velocity
		grounded: false,
		pose: 'stand',
		// 'stand', 'sit', 'jump'
		headAngle: 0,
		// radians, for "pull head" actions
		x: 0,
		// world position
		y: 0
	};
	// --- Positioning offsets (relative to puppet center) ---
	function updateBodyParts() {
		// Head
		head.x = 0;
		head.y = -bodyH / 2 - headH / 2 + 10;
		head.rotation = self.state.headAngle;
		// Body
		body.x = 0;
		body.y = -bodyH / 2;
		// --- 2D IK for ARMS ---
		// Anatomically improved shoulder positions (slightly lower and wider)
		var shoulderYOffset = -bodyH / 2 + 54;
		var shoulderXOffset = bodyW / 2 + upperArmW * 0.62;
		var lShoulderX = -shoulderXOffset;
		var lShoulderY = shoulderYOffset;
		var rShoulderX = shoulderXOffset;
		var rShoulderY = shoulderYOffset;
		// Target hand positions (relative to puppet center)
		// Animate hand targets based on pose
		var lHandTarget = {
			x: lShoulderX - 80,
			y: lShoulderY + 210
		};
		var rHandTarget = {
			x: rShoulderX + 80,
			y: rShoulderY + 210
		};
		if (self.state.pose === 'sit') {
			lHandTarget = {
				x: lShoulderX - 60,
				y: lShoulderY + 290
			};
			rHandTarget = {
				x: rShoulderX + 60,
				y: rShoulderY + 290
			};
		} else if (self.state.pose === 'jump') {
			lHandTarget = {
				x: lShoulderX - 20,
				y: lShoulderY - 80
			};
			rHandTarget = {
				x: rShoulderX + 20,
				y: rShoulderY - 80
			};
		} else if (self.state.pose === 'stand') {
			// Gentle swing
			var swing = Math.sin(Date.now() * 0.003) * 70;
			lHandTarget.x += swing;
			rHandTarget.x -= swing;
			lHandTarget.y += Math.abs(swing) * 0.22;
			rHandTarget.y += Math.abs(swing) * 0.22;
		}
		// 2D IK solver for arms (returns joint positions and angles)
		// This version ensures the elbow always bends downward (arms hang down), never "breaks" upward
		function solveIK2DDownward(sx, sy, ex, ey, l1, l2) {
			// Returns {ax, ay, bx, by, aAngle, bAngle}
			var dx = ex - sx,
				dy = ey - sy;
			var dist = Math.sqrt(dx * dx + dy * dy);
			dist = Math.min(dist, l1 + l2 - 0.01); // Clamp to reachable
			// Law of cosines
			var a1 = Math.acos((l1 * l1 + dist * dist - l2 * l2) / (2 * l1 * dist));
			var a2 = Math.atan2(dy, dx);
			// To ensure the elbow always bends downward, we check the "elbow up" and "elbow down" solutions
			// and always pick the one where the elbow is below the shoulder and hand
			var upperAngleDown = a2 + a1; // Elbow "down"
			var elbowXDown = sx + Math.cos(upperAngleDown) * l1;
			var elbowYDown = sy + Math.sin(upperAngleDown) * l1;
			var upperAngleUp = a2 - a1; // Elbow "up"
			var elbowXUp = sx + Math.cos(upperAngleUp) * l1;
			var elbowYUp = sy + Math.sin(upperAngleUp) * l1;
			// Pick the elbow position with the greatest Y (lowest on screen)
			var useDown = elbowYDown > elbowYUp;
			var elbowX = useDown ? elbowXDown : elbowXUp;
			var elbowY = useDown ? elbowYDown : elbowYUp;
			var upperAngle = useDown ? upperAngleDown : upperAngleUp;
			var lowerAngle = Math.atan2(ey - elbowY, ex - elbowX);
			return {
				ax: sx,
				ay: sy,
				bx: elbowX,
				by: elbowY,
				aAngle: upperAngle,
				bAngle: lowerAngle
			};
		}
		// Left arm (elbow always bends downward, arms hang down)
		var lArmIK = solveIK2DDownward(lShoulderX, lShoulderY, lHandTarget.x, lHandTarget.y, upperArmH, lowerArmH);
		lUpperArm.x = lArmIK.ax;
		lUpperArm.y = lArmIK.ay;
		lUpperArm.rotation = lArmIK.aAngle - Math.PI / 2;
		// Lower arm: connect at elbow joint, always below the elbow (dirsekten aşağıda)
		var lLowerArmLength = lowerArmH;
		var lForearmAngle = lArmIK.bAngle;
		lLowerArm.x = lArmIK.bx;
		lLowerArm.y = lArmIK.by;
		lLowerArm.rotation = lForearmAngle - Math.PI / 2;
		// Right arm (elbow always bends downward, arms hang down)
		var rArmIK = solveIK2DDownward(rShoulderX, rShoulderY, rHandTarget.x, rHandTarget.y, upperArmH, lowerArmH);
		rUpperArm.x = rArmIK.ax;
		rUpperArm.y = rArmIK.ay;
		rUpperArm.rotation = rArmIK.aAngle - Math.PI / 2;
		// Lower arm: connect at elbow joint, always below the elbow (dirsekten aşağıda)
		var rLowerArmLength = lowerArmH;
		var rForearmAngle = rArmIK.bAngle;
		rLowerArm.x = rArmIK.bx;
		rLowerArm.y = rArmIK.by;
		rLowerArm.rotation = rForearmAngle - Math.PI / 2;
		// --- 2D IK for LEGS ---
		var legY = bodyH / 2 - 10;
		var legX = bodyW / 2 - 18;
		var lHipX = -legX;
		var lHipY = legY;
		var rHipX = legX;
		var rHipY = legY;
		// Target foot positions (relative to puppet center)
		var lFootTarget = {
			x: lHipX - 10,
			y: lHipY + upperLegH + lowerLegH - 10
		};
		var rFootTarget = {
			x: rHipX + 10,
			y: rHipY + upperLegH + lowerLegH - 10
		};
		if (self.state.pose === 'sit') {
			lFootTarget = {
				x: lHipX + 80,
				y: lHipY + upperLegH + lowerLegH - 30
			};
			rFootTarget = {
				x: rHipX + 80,
				y: rHipY + upperLegH + lowerLegH - 30
			};
		} else if (self.state.pose === 'jump') {
			lFootTarget = {
				x: lHipX - 30,
				y: lHipY + 60
			};
			rFootTarget = {
				x: rHipX + 30,
				y: rHipY + 60
			};
		} else if (self.state.pose === 'stand') {
			// Gentle walk cycle if moving
			var walk = Math.abs(self.state.vx) > 0.5 ? Math.sin(Date.now() * 0.008) * 60 : 0;
			lFootTarget.x += walk;
			rFootTarget.x -= walk;
			lFootTarget.y += Math.abs(walk) * 0.2;
			rFootTarget.y += Math.abs(walk) * 0.2;
		}
		// 2D IK for left leg
		var lLegIK = solveIK2D(lHipX, lHipY, lFootTarget.x, lFootTarget.y, upperLegH, lowerLegH);
		lUpperLeg.x = lLegIK.ax;
		lUpperLeg.y = lLegIK.ay;
		lUpperLeg.rotation = lLegIK.aAngle - Math.PI / 2;
		lLowerLeg.x = lLegIK.bx;
		lLowerLeg.y = lLegIK.by;
		lLowerLeg.rotation = lLegIK.bAngle - Math.PI / 2;
		// 2D IK for right leg
		var rLegIK = solveIK2D(rHipX, rHipY, rFootTarget.x, rFootTarget.y, upperLegH, lowerLegH);
		rUpperLeg.x = rLegIK.ax;
		rUpperLeg.y = rLegIK.ay;
		rUpperLeg.rotation = rLegIK.aAngle - Math.PI / 2;
		rLowerLeg.x = rLegIK.bx;
		rLowerLeg.y = rLegIK.by;
		rLowerLeg.rotation = rLegIK.bAngle - Math.PI / 2;
		// Body rotation for sit/jump
		if (self.state.pose === 'sit') {
			body.rotation = -0.18;
		} else if (self.state.pose === 'jump') {
			body.rotation = 0.12;
		} else {
			body.rotation = 0;
		}
	}
	// --- Public puppet actions ---
	self.pullHeadLeft = function () {
		// Pull head left, add leftward velocity
		if (self.state.grounded) {
			self.state.vx -= 12;
			self.state.headAngle = -0.5;
			tween(self.state, {
				headAngle: 0
			}, {
				duration: 400,
				easing: tween.easeOut
			});
		}
	};
	self.pullHeadRight = function () {
		if (self.state.grounded) {
			self.state.vx += 12;
			self.state.headAngle = 0.5;
			tween(self.state, {
				headAngle: 0
			}, {
				duration: 400,
				easing: tween.easeOut
			});
		}
	};
	self.jump = function () {
		if (self.state.grounded) {
			self.state.vy = -48; // Increased jump velocity for higher jump
			self.state.grounded = false;
			self.state.pose = 'jump';
			tween(self.state, {}, {
				duration: 0,
				onFinish: function onFinish() {
					// After 400ms, return to stand pose
					LK.setTimeout(function () {
						self.state.pose = 'stand';
					}, 400);
				}
			});
		}
	};
	self.sit = function () {
		if (self.state.grounded && self.state.pose !== 'sit') {
			self.state.pose = 'sit';
			// After 600ms, stand up automatically
			LK.setTimeout(function () {
				self.stand();
			}, 600);
		}
	};
	self.stand = function () {
		if (self.state.grounded && self.state.pose !== 'stand') {
			self.state.pose = 'stand';
		}
	};
	// --- Physics update ---
	self.update = function () {
		// Gravity
		if (!self.state.grounded) {
			self.state.vy += 2.2; // gravity
			if (self.state.vy > 40) self.state.vy = 40;
		}
		// Friction
		if (self.state.grounded) {
			self.state.vx *= 0.82;
			if (Math.abs(self.state.vx) < 0.5) self.state.vx = 0;
		} else {
			self.state.vx *= 0.98;
		}
		// Move
		self.state.x += self.state.vx;
		self.state.y += self.state.vy;
		// Clamp to world bounds
		if (self.state.x < 80) self.state.x = 80;
		if (self.state.x > 2048 - 80) self.state.x = 2048 - 80;
		// --- Ava: Adjust puppet Y so feet are above ground visually ---
		// The puppet's feet are at y + (bodyH/2) + upperLegH + lowerLegH - 10 - 10
		// ground.y = 2732 - 80, ground height = 80
		// So, puppet.y + (bodyH/2) + upperLegH + lowerLegH - 20 = 2732 - 80
		// puppet.y = 2732 - 80 - (bodyH/2) - upperLegH - lowerLegH + 20
		var puppetFeetOffset = bodyH / 2 + upperLegH + lowerLegH - 20;
		var puppetGroundY = 2732 - 80 - puppetFeetOffset;
		if (self.state.y > puppetGroundY) self.state.y = puppetGroundY; // above ground
		// Ground collision
		if (self.state.y >= puppetGroundY) {
			self.state.y = puppetGroundY;
			self.state.vy = 0;
			self.state.grounded = true;
			if (self.state.pose === 'jump') self.state.pose = 'stand';
		} else {
			self.state.grounded = false;
		}
		// Apply to container
		self.x = self.state.x;
		self.y = self.state.y;
		updateBodyParts();
	};
	// --- Start position ---
	self.state.x = 600; // Moved puppet further right (was 180)
	// --- Ava: Set initial Y so feet are above ground visually ---
	var puppetFeetOffset = bodyH / 2 + upperLegH + lowerLegH - 20;
	self.state.y = 2732 - 80 - puppetFeetOffset;
	updateBodyParts();
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x000000
});

/**** 
* Game Code
****/ 
// Ava: background asset
// Apply reverb to all drum and win/lose sounds
// --- World setup ---
// Puppet body parts (shapes)
// Drums
// Ground
// Finish sign
// Drum tap sound
// Win/lose sound
// Define and initialize the reverb object before using it
var reverb = {
	add: function add(sound) {
		// Dummy implementation: does nothing, but prevents errors
		// In a real environment, this would apply a reverb effect to the sound
	}
};
reverb.add(LK.getSound('drum_tap_center'));
reverb.add(LK.getSound('drum_tap_left'));
reverb.add(LK.getSound('drum_tap_right'));
reverb.add(LK.getSound('drum_tap_sit'));
reverb.add(LK.getSound('drum_tap_stand'));
reverb.add(LK.getSound('lose'));
reverb.add(LK.getSound('win'));
// --- Background music playlist (4 tracks, play in random order) --- 
var musicTracks = [{
	id: 'musicId',
	volume: 0.1,
	start: 0,
	end: 1
}, {
	id: 'musicId2',
	volume: 0.1,
	start: 0,
	end: 1
}, {
	id: 'musicId3',
	volume: 0.1,
	start: 0,
	end: 1
}, {
	id: 'musicId4',
	volume: 0.1,
	start: 0,
	end: 1
}];
// Shuffle helper (Fisher-Yates)
function shuffleArray(arr) {
	for (var i = arr.length - 1; i > 0; i--) {
		var j = Math.floor(Math.random() * (i + 1));
		var temp = arr[i];
		arr[i] = arr[j];
		arr[j] = temp;
	}
}
// Start with a shuffled playlist
var shuffledMusicOrder = [];
function reshuffleMusicOrder() {
	shuffledMusicOrder = [];
	for (var i = 0; i < musicTracks.length; ++i) shuffledMusicOrder.push(i);
	shuffleArray(shuffledMusicOrder);
}
reshuffleMusicOrder();
var currentMusicOrderIndex = 0;
function playNextMusic() {
	// If we've played all, reshuffle for a new random order
	if (currentMusicOrderIndex >= shuffledMusicOrder.length) {
		reshuffleMusicOrder();
		currentMusicOrderIndex = 0;
	}
	var trackIndex = shuffledMusicOrder[currentMusicOrderIndex];
	var track = musicTracks[trackIndex];
	LK.playMusic(track.id, {
		loop: false,
		volume: track.volume,
		start: track.start,
		end: track.end,
		onFinish: function onFinish() {
			currentMusicOrderIndex++;
			playNextMusic();
		}
	});
}
playNextMusic();
game.setBackgroundColor(0x000000);
// --- Background ---
// Ava: Add background image behind all elements
var background = LK.getAsset('background', {
	anchorX: 0,
	anchorY: 0,
	x: 0,
	y: 0,
	scaleX: 1,
	scaleY: 1
});
game.addChild(background);
// Ground
var ground = LK.getAsset('ground', {
	anchorX: 0,
	anchorY: 0
});
ground.x = 0;
ground.y = 2732 - 80;
game.addChild(ground);
// Finish sign
var finishSign = LK.getAsset('finish_sign', {
	anchorX: 0.5,
	anchorY: 1,
	scaleX: 3,
	scaleY: 6 // 2x as tall as before
});
finishSign.x = 2048 - 120;
finishSign.y = 2732 - 80;
game.addChild(finishSign);
// Finish text removed
// --- Puppet ---
var puppet = new Puppet();
game.addChild(puppet);
// --- Drums ---
var drums = [];
// Drum positions (relative to center)
// Move drums higher: set drumCenterY above puppet's head
var drumCenterX = 2048 / 2,
	drumCenterY = 900; // was 2732 / 2 + 220, now much higher (puppet head is around y=~1200)
var drumRadius = 220 * 3;
var angleList = [{
	type: 'left',
	angle: -Math.PI / 2 - 0.7
}, {
	type: 'right',
	angle: -Math.PI / 2 + 0.7
}, {
	type: 'sit',
	angle: Math.PI / 2 + 0.7
}, {
	type: 'stand',
	angle: Math.PI / 2 - 0.7
}];
// --- Drum action pool ---
// Each drum will have all actions, only their order will be shuffled
// Ava: Increase the number of right movement actions (pullHeadRight) in the action pool
var puppetActions = [function () {
	puppet.pullHeadLeft();
}, function () {
	puppet.pullHeadRight();
}, function () {
	puppet.pullHeadRight();
}, function () {
	puppet.jump();
}, function () {
	puppet.sit();
}, function () {
	puppet.stand();
}];
// Large center drum (fixed action sequence)
var drumJump = new Drum();
drumJump.setDrum('large');
drumJump.x = drumCenterX;
drumJump.y = drumCenterY;
// Assign a fixed sequence of all 5 actions, and cycle through them
drumJump._actionSequence = puppetActions.slice();
drumJump._actionIndex = 0;
drumJump.action = function () {
	drumJump._actionSequence[drumJump._actionIndex]();
	drumJump._actionIndex = (drumJump._actionIndex + 1) % drumJump._actionSequence.length;
};
game.addChild(drumJump);
drums.push(drumJump);
// Four medium drums
for (var i = 0; i < angleList.length; ++i) {
	var d = new Drum();
	d.setDrum(angleList[i].type);
	d.x = drumCenterX + Math.cos(angleList[i].angle) * drumRadius;
	d.y = drumCenterY + Math.sin(angleList[i].angle) * drumRadius;
	// Each drum gets a fixed sequence of all 5 actions, and cycles through them
	d._actionSequence = puppetActions.slice();
	d._actionIndex = 0;
	d.action = function (drum) {
		return function () {
			drum._actionSequence[drum._actionIndex]();
			drum._actionIndex = (drum._actionIndex + 1) % drum._actionSequence.length;
		};
	}(d);
	game.addChild(d);
	drums.push(d);
}
// --- Timer ---
var timeLeft = 60;
function formatTimeDigital(secs) {
	var m = Math.floor(secs / 60);
	var s = secs % 60;
	var mm = m < 10 ? "0" + m : "" + m;
	var ss = s < 10 ? "0" + s : "" + s;
	return mm + ":" + ss;
}
var timerText = new Text2(formatTimeDigital(60), {
	size: 120,
	fill: '#ffffff'
});
timerText.anchor.set(0.5, 0);
LK.gui.top.addChild(timerText);
// --- Score/Win state ---
var gameEnded = false;
// --- Timer logic ---
var timerInterval = LK.setInterval(function () {
	if (gameEnded) return;
	timeLeft -= 1;
	if (timeLeft < 0) timeLeft = 0;
	timerText.setText(formatTimeDigital(timeLeft));
	if (timeLeft === 0 && !gameEnded) {
		gameEnded = true;
		LK.getSound('lose').play();
		LK.effects.flashScreen(0xff0000, 800);
		LK.showGameOver();
	}
}, 1000);
// --- Game update ---
game.update = function () {
	if (gameEnded) return;
	puppet.update();
	// Win condition: puppet body collides with finish sign using intersects
	if (!gameEnded && puppet.intersects(finishSign)) {
		gameEnded = true;
		LK.setScore(timeLeft); // Set score to remaining seconds
		LK.getSound('win').play();
		LK.effects.flashScreen(0x44c767, 800);
		LK.showYouWin();
	}
};
// --- Clean up on game over ---
game.onDestroy = function () {
	LK.clearInterval(timerInterval);
};
// --- Prevent accidental tap on top left (menu) ---
/* No elements are placed at (0,0)-(100,100) */
// --- UX: drums are always on top ---
for (var i = 0; i < drums.length; ++i) {
	game.addChild(drums[i]);
}

===================================================================
--- original.js
+++ change.js
@@ -244,20 +244,31 @@
 			lHandTarget.y += Math.abs(swing) * 0.22;
 			rHandTarget.y += Math.abs(swing) * 0.22;
 		}
 		// 2D IK solver for arms (returns joint positions and angles)
-		function solveIK2D(sx, sy, ex, ey, l1, l2) {
+		// This version ensures the elbow always bends downward (arms hang down), never "breaks" upward
+		function solveIK2DDownward(sx, sy, ex, ey, l1, l2) {
 			// Returns {ax, ay, bx, by, aAngle, bAngle}
 			var dx = ex - sx,
 				dy = ey - sy;
 			var dist = Math.sqrt(dx * dx + dy * dy);
 			dist = Math.min(dist, l1 + l2 - 0.01); // Clamp to reachable
 			// Law of cosines
 			var a1 = Math.acos((l1 * l1 + dist * dist - l2 * l2) / (2 * l1 * dist));
 			var a2 = Math.atan2(dy, dx);
-			var upperAngle = a2 - a1;
-			var elbowX = sx + Math.cos(upperAngle) * l1;
-			var elbowY = sy + Math.sin(upperAngle) * l1;
+			// To ensure the elbow always bends downward, we check the "elbow up" and "elbow down" solutions
+			// and always pick the one where the elbow is below the shoulder and hand
+			var upperAngleDown = a2 + a1; // Elbow "down"
+			var elbowXDown = sx + Math.cos(upperAngleDown) * l1;
+			var elbowYDown = sy + Math.sin(upperAngleDown) * l1;
+			var upperAngleUp = a2 - a1; // Elbow "up"
+			var elbowXUp = sx + Math.cos(upperAngleUp) * l1;
+			var elbowYUp = sy + Math.sin(upperAngleUp) * l1;
+			// Pick the elbow position with the greatest Y (lowest on screen)
+			var useDown = elbowYDown > elbowYUp;
+			var elbowX = useDown ? elbowXDown : elbowXUp;
+			var elbowY = useDown ? elbowYDown : elbowYUp;
+			var upperAngle = useDown ? upperAngleDown : upperAngleUp;
 			var lowerAngle = Math.atan2(ey - elbowY, ex - elbowX);
 			return {
 				ax: sx,
 				ay: sy,
@@ -266,27 +277,27 @@
 				aAngle: upperAngle,
 				bAngle: lowerAngle
 			};
 		}
-		// Left arm (elbow open: do not invert, elbows point outward)
-		var lArmIK = solveIK2D(lShoulderX, lShoulderY, lHandTarget.x, lHandTarget.y, upperArmH, lowerArmH);
+		// Left arm (elbow always bends downward, arms hang down)
+		var lArmIK = solveIK2DDownward(lShoulderX, lShoulderY, lHandTarget.x, lHandTarget.y, upperArmH, lowerArmH);
 		lUpperArm.x = lArmIK.ax;
 		lUpperArm.y = lArmIK.ay;
 		lUpperArm.rotation = lArmIK.aAngle - Math.PI / 2;
 		// Lower arm: connect at elbow joint, always below the elbow (dirsekten aşağıda)
 		var lLowerArmLength = lowerArmH;
-		var lForearmAngle = lArmIK.bAngle; // direction from elbow to hand
+		var lForearmAngle = lArmIK.bAngle;
 		lLowerArm.x = lArmIK.bx;
 		lLowerArm.y = lArmIK.by;
 		lLowerArm.rotation = lForearmAngle - Math.PI / 2;
-		// Right arm (elbow open: do not invert, elbows point outward)
-		var rArmIK = solveIK2D(rShoulderX, rShoulderY, rHandTarget.x, rHandTarget.y, upperArmH, lowerArmH);
+		// Right arm (elbow always bends downward, arms hang down)
+		var rArmIK = solveIK2DDownward(rShoulderX, rShoulderY, rHandTarget.x, rHandTarget.y, upperArmH, lowerArmH);
 		rUpperArm.x = rArmIK.ax;
 		rUpperArm.y = rArmIK.ay;
 		rUpperArm.rotation = rArmIK.aAngle - Math.PI / 2;
 		// Lower arm: connect at elbow joint, always below the elbow (dirsekten aşağıda)
 		var rLowerArmLength = lowerArmH;
-		var rForearmAngle = rArmIK.bAngle; // direction from elbow to hand
+		var rForearmAngle = rArmIK.bAngle;
 		rLowerArm.x = rArmIK.bx;
 		rLowerArm.y = rArmIK.by;
 		rLowerArm.rotation = rForearmAngle - Math.PI / 2;
 		// --- 2D IK for LEGS ---